620 112TH ST SE SPACE 375 2019-08-16

ARIFS#10 r G n(arms to r IIt \1HCSS-- Install Stabilizing Systems "0/2""� This chapter covers the design and installation of the stabilizing system which secures the home against lateral and up- ward forces caused by wind. The system covered here uses earth (or ground)anchors and steel straps connected to the home's longitudinal steel beams and/or exterior walls. Stabilizer plates may also be used to prevent the anchor head from moving laterally in the ground. An anchor, strap, and stabilizer plate (if used)together are referred to as a tie-down. Anchors can also be mounted in concrete footings when there is enough concrete mass (weight)to resist the lateral and upward forces. This type of system is not covered in this manual. • Follow the Steps below: 7 STEP 1. DETERMINE ANCHOR LOCATIONS (p. 60) STEP 2. DETERMINE TIE-DOWN CONFIGURATION (p. 69) 7 STEP 3. SELECT ANCHORS (p. 69) 7 STEP 4. INSTALL ANCHORS (p. 70) 7 STEP 5. INSTALL STRAPS (p. 71) ' STEP 6. TIGHTEN AND ADJUST STRAPS (p. 74) STEP 1. DETERMINE ANCHOR LOCATIONS Create a sketch of the home plan showing the exterior walls, marriage line(s)(if any) and frame I-beams (this will be similar to the base sketch created in Prepare Footings, i ' /� page 17). • See Table 21 for a list of anchor locations, types, and where they are required. PagesNeed for a stabilizing sys- where the requirements are provided are noted in the last column. tem. The manufactured As each anchor location is determined, mark it on the sketch, noting important dimen- home must be secured use sions such as spacing between anchors. When complete, this will be the home's tie against the wind b they or down plan (Figure 61 and Figure 62). of an anchor assembly an alternative foundation TABLE 21.ANCHOR LOCATION TYPES system. Where site or other conditions prohibit the use WiLocation Type Wind Zone I nandd o Iles II page of the manufacturer's in- See structions, a registered en- Frame Sidewall Yes Yes 61 en- gineer or registered archi Vertical Yes 65 tett must design the stabi- Frame lizing system. End wall Sometimes Yes 65 -�_: Flood and seismic forces. Vertical la. No N/A The stabilizing system re- Shear wall2 Vertical No No quirements in this chapter N/A Marriage line Vertical ;, Yes do not consider flood or �,> 66 seismic loads and are not rame Tag(Jr t Yes Yes 66 intended for use in flood or ertical No Yes 66 seismic hazard areas. In Post Vertical those areas retain a regis- PorchYes 66 tered engineer or registered 'Iffset Uniti,... Yes Yes 66 architect to design the sta- Connect any factoryinstal-d sidewall tie-down straps to a ground anchor regardless of the wind bilizing system. zone in which the home is placed. 2 Install interior shear wall anchors and marriage line anchors prior to moving the home over the top of the anchor locations and then return to Set the Home or Complete Multi-Section Set re- spectively. Figure 61 and Figure 62 illustrate typical anchor locations for a double-section home in Wind Zone I and Wind Zones II and III respectively. I , I 1 Palm Harlbnr Homes, Inc. /